Ty Cobb has to be up there, he would do anything it took to reach a base and his attacked a disabled man who heckled him with slurs. I will say that many of the negative things associated with Cobb came from the Al Stump's ghost written autobiography, released after Cobb's death, which made Cobb look worse than he actually was. Ted Williams pretty much called Stump a liar when referring to an incident between Cobb and Williams.